有这么多的可变因素，很难计算出成本。

With so many variables, it is difficult to calculate the cost.

《牛津词典》

决定可以基于价格、送货日期、售后服务或是任何其他可变因素而做出。

Decisions could be made on the basis of price, delivery dates, after-sales service or any other variable.

《柯林斯英汉双解大词典》

比如，森林里就有大量的相邻小气候区，其环境截然不同，这是因为刚刚我所提到的各种不同的可变因素。

In the forest, for example, there can be a number of very different microclimates close to each other, because of all the variables I just mentioned.

youdao

So the big three People who are similar to you, people who are already familiar to you, people who are nearby in space.

三大可变因素,相似性，熟悉度，空间接近性。

耶鲁公开课 - 心理学导论课程节选

And you'll see as we go through the other big-- the other two "big three" that there is a kind of repetition of this theme.

你们将发现-,在我们讨论其他两大可变因素的时候“,主题上有些重合。

耶鲁公开课 - 心理学导论课程节选

But let's quickly talk about the big three.

首先，我们快速地说说三大可变因素。

耶鲁公开课 - 心理学导论课程节选